<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Three框架</title>
    <script src="../thingjs/js/three.js"></script>
    <style type="text/css">
        div#canvas-frame {
            border: none;
            cursor: pointer;
            width: 100%;
            height: 600px;
            background-color: #EEEEEE;
        }

    </style>
</head>

<body onload="threeStart();">
<div id="canvas-frame"></div>
</body>

<script>

    var renderer;
    function initThree() {
        width = document.getElementById('canvas-frame').clientWidth;
        height = document.getElementById('canvas-frame').clientHeight;
        renderer = new THREE.WebGLRenderer({
            antialias : true
        });
        renderer.setSize(width, height);
        document.getElementById('canvas-frame').appendChild(renderer.domElement);
        renderer.setClearColor(0xFFFFFF, 1.0);
    }

    var camera;
    function initCamera() {
        camera = new THREE.PerspectiveCamera(45, width / height, 1, 10000);
        camera.position.x = 0;
        camera.position.y = 1000;
        camera.position.z = 0;
        camera.up.x = 0;
        camera.up.y = 0;
        camera.up.z = 1;
        camera.lookAt({
            x : 0,
            y : 0,
            z : 0
        });
    }

    var scene;
    function initScene() {
        scene = new THREE.Scene();
    }

    var light;
    function initLight() {
        light = new THREE.DirectionalLight(0xFF0000, 1.0, 0);
        light.position.set(100, 100, 200);
        scene.add(light);
    }

    var cube;
    function initObject() {
        var geometry = new THREE.Geometry();
        geometry.vertices.push( new THREE.Vector3( -300, 0, 0 ) );
        geometry.vertices.push( new THREE.Vector3( 300, 0, 0 ) );

        for ( var i = 0; i <= 20; i ++ ) {

            var line = new THREE.Line( geometry, new THREE.LineBasicMaterial( { color: 0xffffff, opacity: 0.2 } ) );
            line.position.z = ( i * 30 ) - 300;
            scene.add( line );

            var line = new THREE.Line( geometry, new THREE.LineBasicMaterial( { color: 0xffffff, opacity: 0.2 } ) );
            line.position.x = ( i * 30 ) - 300;
            line.rotation.y = 90 * Math.PI / 180;
            scene.add( line );

        }
    }

    function threeStart() {
        initThree();
        initCamera();
        initScene();
        initLight();
        initObject();
        renderer.clear();
        renderer.render(scene, camera);
    }

</script>

</html>